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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1145986	Aspen Aerogels Inc	ASPN	()	KS

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
923338	Koch Industries Inc	4111 E. 37Th Street North Wichita KS 67220		No	No	No	No
1888978	Wood River Capital, Llc	4111 E. 37Th Street North Wichita KS 67220		No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2024-05-14	3,500,000	$23.50	12,280,426	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Footnotes

The sale was executed in a single block trade at $23.50 per share.
Wood River is beneficially owned by SCC Holdings, LLC ("SCC"), SCC is beneficially owned by KIM, LLC ("KIM"), KIM is beneficially owned by Koch Investments Group, LLC ("KIG"), KIG is beneficially owned by Koch Investments Group Holdings, LLC ("KIGH"), and KIGH is beneficially owned by Koch Industries, Inc. ("Koch Industries"), in each case by means of ownership of all voting equity instruments. Koch Industries, SCC, KIM, KIG, and KIGH may be deemed to beneficially own the shares of the Issuer's common stock beneficially owned by Wood River by virtue of (i) Koch Industries' beneficial ownership of KIGH, (ii) KIGH's beneficial ownership of KIG, (iii) KIG's beneficial ownership of KIM, (iv) KIM's beneficial ownership of SCC and (v) SCC's beneficial ownership of Wood River.